EP2143103A4 - Method and speech encoder with length adjustment of dtx hangover period - Google Patents

Method and speech encoder with length adjustment of dtx hangover period

Info

Publication number
EP2143103A4
EP2143103A4 EP07835247A EP07835247A EP2143103A4 EP 2143103 A4 EP2143103 A4 EP 2143103A4 EP 07835247 A EP07835247 A EP 07835247A EP 07835247 A EP07835247 A EP 07835247A EP 2143103 A4 EP2143103 A4 EP 2143103A4
Authority
EP
European Patent Office
Prior art keywords
length adjustment
speech encoder
hangover period
dtx hangover
dtx
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07835247A
Other languages
German (de)
French (fr)
Other versions
EP2143103A1 (en
Inventor
Jonas Svedberg
Martin Sehlstedt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of EP2143103A1 publication Critical patent/EP2143103A1/en
Publication of EP2143103A4 publication Critical patent/EP2143103A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP07835247A 2007-03-29 2007-12-05 Method and speech encoder with length adjustment of dtx hangover period Withdrawn EP2143103A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90734707P 2007-03-29 2007-03-29
PCT/SE2007/001086 WO2008121035A1 (en) 2007-03-29 2007-12-05 Method and speech encoder with length adjustment of dtx hangover period

Publications (2)

Publication Number Publication Date
EP2143103A1 EP2143103A1 (en) 2010-01-13
EP2143103A4 true EP2143103A4 (en) 2011-11-30

Family

ID=39808520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07835247A Withdrawn EP2143103A4 (en) 2007-03-29 2007-12-05 Method and speech encoder with length adjustment of dtx hangover period

Country Status (5)

Country Link
US (1) US20100106490A1 (en)
EP (1) EP2143103A4 (en)
JP (1) JP2010525376A (en)
KR (1) KR101408625B1 (en)
WO (1) WO2008121035A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103229234B (en) 2010-11-22 2015-07-08 株式会社Ntt都科摩 Audio encoding device, method and program, and audio decoding deviceand method
CN102971789B (en) * 2010-12-24 2015-04-15 华为技术有限公司 A method and an apparatus for performing a voice activity detection
CN102903364B (en) * 2011-07-29 2017-04-12 中兴通讯股份有限公司 Method and device for adaptive discontinuous voice transmission
WO2014010175A1 (en) * 2012-07-09 2014-01-16 パナソニック株式会社 Encoding device and encoding method
AP2015008251A0 (en) * 2012-09-11 2015-02-28 Telefonaktiebogalet Lm Ericsson Publ Generation of comfort noise
US9451548B2 (en) * 2013-02-21 2016-09-20 Telefonaktiebolaget Lm Ericsson (Publ) Method, wireless device computer program and computer program product for use with discontinuous reception
CN110010141B (en) 2013-02-22 2023-12-26 瑞典爱立信有限公司 Method and apparatus for DTX smearing in audio coding
CN105225668B (en) * 2013-05-30 2017-05-10 华为技术有限公司 Signal encoding method and equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020120440A1 (en) * 2000-12-28 2002-08-29 Shude Zhang Method and apparatus for improved voice activity detection in a packet voice network

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US5157728A (en) * 1990-10-01 1992-10-20 Motorola, Inc. Automatic length-reducing audio delay line
US5410632A (en) * 1991-12-23 1995-04-25 Motorola, Inc. Variable hangover time in a voice activity detector
JP3375655B2 (en) * 1992-02-12 2003-02-10 松下電器産業株式会社 Sound / silence determination method and device
JP2728122B2 (en) * 1995-05-23 1998-03-18 日本電気株式会社 Silence compressed speech coding / decoding device
US6269331B1 (en) * 1996-11-14 2001-07-31 Nokia Mobile Phones Limited Transmission of comfort noise parameters during discontinuous transmission
US5960389A (en) * 1996-11-15 1999-09-28 Nokia Mobile Phones Limited Methods for generating comfort noise during discontinuous transmission
US6202046B1 (en) * 1997-01-23 2001-03-13 Kabushiki Kaisha Toshiba Background noise/speech classification method
JP3331297B2 (en) * 1997-01-23 2002-10-07 株式会社東芝 Background sound / speech classification method and apparatus, and speech coding method and apparatus
JP4047475B2 (en) * 1999-02-16 2008-02-13 Ｎｅｃエンジニアリング株式会社 Noise insertion device
US7423983B1 (en) * 1999-09-20 2008-09-09 Broadcom Corporation Voice and data exchange over a packet based network
JP2002314597A (en) * 2001-04-09 2002-10-25 Mitsubishi Electric Corp Voice packet communication equipment
JP4518714B2 (en) * 2001-08-31 2010-08-04 富士通株式会社 Speech code conversion method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020120440A1 (en) * 2000-12-28 2002-08-29 Shude Zhang Method and apparatus for improved voice activity detection in a packet voice network

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PAKSOY E ET AL: "VARIABLE BIT-RATE CELP CODING OF SPEECH WITH PHONETIC CLASSIFICATION (1)", EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS AND RELATEDTECHNOLOGIES, AEI, MILANO, IT, vol. 5, no. 5, 1 September 1994 (1994-09-01), pages 57 - 67, XP000470680, ISSN: 1120-3862 *

Also Published As

Publication number Publication date
KR101408625B1 (en) 2014-06-17
JP2010525376A (en) 2010-07-22
WO2008121035A1 (en) 2008-10-09
US20100106490A1 (en) 2010-04-29
KR20090122976A (en) 2009-12-01
EP2143103A1 (en) 2010-01-13

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